Made the grep example more amenable to copypasting

By dropping whitespace sensitivity in the greps.  Fixes #4.

Author: Lari Rasku

README.rst

@@ -126,19 +126,19 @@ Read the help and version messages from standard input::
 Parse the help and version messages from script comments and pass them as
 command line arguments::
 
-    ## rock 0.1.0
-    ## Copyright (C) 200X Thomas Light
-    ## License RIT (Robot Institute of Technology)
-    ## This is free software: you are free to change and redistribute it.
-    ## There is NO WARRANTY, to the extent permitted by law.
+    #? rock 0.1.0
+    #? Copyright (C) 200X Thomas Light
+    #? License RIT (Robot Institute of Technology)
+    #? This is free software: you are free to change and redistribute it.
+    #? There is NO WARRANTY, to the extent permitted by law.
     
-    ### Usage: rock [options] <argv>...
-    ### 
-    ###       --help     Show help options.
-    ###       --version  Print program version.
+    ##? Usage: rock [options] <argv>...
+    ##? 
+    ##?       --help     Show help options.
+    ##?       --version  Print program version.
     
-    help=$(grep "^### " "$0" | cut -c 5-)
-    version=$(grep "^## "  "$0" | cut -c 4-)
+    help=$(grep "^##?" "$0" | cut -c 5-)
+    version=$(grep "^#?"  "$0" | cut -c 4-)
     eval "$(docopts -h "$help" -V "$version" : "$@")"
     
     for arg in "${argv[@]}"; do